Home / 8,687.31-13,029.93-2,447.79

Finding the Fourth Proportional to 8,687.31, 13,029.93 and 2,447.79

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Solution

The fourth proportional to 8,687.31, 13,029.93 and 2,447.79 is: 3,671.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.31 : 13,029.93 = 2,447.79 : x
  2. Step 2: Convert to fraction form
    8,687.31/13,029.93 = 2,447.79/x
  3. Step 3: Cross multiply
    8,687.31x = 13,029.93 × 2,447.79
  4. Step 4: Simplify right side
    8,687.31x = 31,894,532.35
  5. Step 5: Solve for x
    x = 31,894,532.35/8,687.31
  6. Step 6: Final answer
    x = 3,671.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.